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Ancient Books

UnratedFunction
English

Language

Contribute a translation
Time limit
2000 ms
Memory limit
1024 MB
Submissions
0
Correct
0
Solved by
0
AC rate
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Statement

Ancient Books: original English statement, page 1

Ancient Books: original English statement, page 2

Ancient Books: original English statement, page 3

Examples

Sample input 1
4 0
0 2 3 1
Sample output 1
6

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Source

This problem accepts only these languages.

C++20